Many people believe that you should keep your head covered during cold weather, as most body heat is lost through the head. It’s certainly true that any part of your body that’s exposed to cooler air will lose warmth; heat always moves from something warm to something cooler (that’s called the second law of thermodynamics). And our heads and faces are more sensitive to changes in temperature than other parts of the body.
Music has been enjoyed all over the world ever since there have been people to sing! Many ancient scrolls and paintings show musical instruments. King David played the harp to please Saul and sang to please God. Emperor Nero reputedly played the viol, an early string instrument, while Rome burned.
Nowadays, most popular music is electronic, although people still play musical instruments, and music is a popular lesson in schools. Some of the most popular musical instruments are piano, clarinet, violin, flute, recorder and guitar, although many people play different instruments.
Continuing our series on enterprising inventors of everyday things we take for granted, Sally Anne asks …
Who on Earth invented…the Pedal Bin?!
You’re carrying something to the bin, your hands are full and you don’t want to spill it. Thank goodness for the pedal bin! Read on to find out about the inventor who tried to make life easier.
Ergonomics is the science of making equipment which fits and works with the human body. This basically means making things work as easily and as conveniently as possible. Dr Lillian Gilbreth was a keen inventor who believed in finding the easiest way of getting things done. As such, she invented a range of gadgets to make jobs easier, including the pedal bin in the 1920s. Now we have to admit, pedal bins aren’t very exciting, but Lillian’s life definitely was.